Ash, so you feed chins things that are not food? Lol, I know what you mean, but I think you're just supporting Claire's point a bit.
As for me, I am no nutritionist. I rely a lot on what I hear here in the forums and from other ranchers and breeders. The "no fruit no veggies" mantra is so ingrained into my mind that I never even stopped to consider it. I may point out that I always considered the fruits and veggies to be fresh when I heard that (raisins had their own NO NO mantra), such as what people happily feed guinea pigs, rats and rabbits - and it is the moisture content that we as chinchilla owners were to avoid. Herbs, the ones being used in chin products, are traditionally dried, so yea I did consider them separately.
However, I just went poking about the
USDA nutrient database and would like to point out that carbs convert into sugar, and shreddies are 78% carb by volume, cheerios 74%, oats 66% and wheat germ 51%. This may be why some chins get bloat from wheat products. I'm sure oats would do the same if over fed. Neither dried herbs nor fresh veggies are anywhere near that high in carbs.
Still, I stick to hay, pellets and water. I do also use Ryerson supplement with crushed/sifted rosehips mixed in, but at one teaspoon a week I don't think there's much more I can cut back on that without eliminating it, so I'm not worried about that carb content (considering even the Ryersons feed more of it than I do). I also grow and dry my own comfrey, which is an herb long used by ranchers to feed sick chins that won't eat pellets. I have not had occasion to use it yet, though. Other than that, just a twig a week of apple wood, and that's it. No fruit, no veggies, no other herbs or wheat, no lifeline or flower salad. I don't even do 1/2 apple juice for new moms anymore.